Thomas



(No Mo de1.) T. J. WILSON.

WRENGH,

Patented Mar. 17, 1885.

, .77607WJWY01L. WILNE SELj IJVVEJVTOR' EUNITED STATES PATENT OFFICE THOMAS J. WILSON, or AUBURN, NEW YORK.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 314,095, dated March 17, 1885. Application filed September 19, 1894. (No model.)

To all whom it may concern:

Be it known that I, THOMAS J. WILsoN, a

citizen of the United States, residing at Aufor holding a movable jaw at any desired adjustment upon the shank, which shall be simple and effective and easily operated, and by which the desired adjustment may be instantly obtained.

With these ends in view the invention con sists in the combination,with a shank carrying a fixed jaw at its end and having a series of teeth upon its upper side, of a movable jaw adapted to slide upon said shank, and a pawl or stop for holding said movable jaw at any desired adjustment.

The invention further consists in the improved construction and combinations of parts hereinafter fully described, and pointed out in the claim.

In the drawings, Figure 1 is a perspective view of a wrench constructed in accordance with my invention. Fig. 2 is a longitudinal vertical section of the same, and Fig. 3 is a detail view of the pawl or stop detached.

In the accompanying drawings, in which like letters of reference indicate corresponding a space is left which is the same width as the movable jaw G. This movable jaw O is provided, as usual, with a passage or opening to receive the shank, upon which it is adapted to be moved, as before stated.

D represents a pawl or stop, which, as shown, is provided with a series of teeth upon its under side, said teeth inclining in a direction opposite to those upon the shank A, so

shank,when thewrench is in use, will be prevented.

E represents bails, which are preferably of spring brass or steel wire. One of said bails pivots the'forward end of the stop or pawl to the forward end of the movable jaw,while the other bail connects the rear end of the stop or pawl and the rear end of said movable jaw. These bails or loops pass through openings in the stop or pawl D, and have their ends bent inwardly to engage slots formed in the sides of the movable jaw, as shown. It will be seen that as the stop is pivoted and weighted it will by its own weight drop into engage ment with the teeth upon the upper side of the shank when the wrench is held in the position shown in Figs. 1 and 2; but should said wrench be moved out of such position the stopwould fall from engagement with the teeth and allow the jaw G to move toward the rear end of the shank.

I have mentioned that the bails or loops were constructed of spring-wire, and to hold them in place and keep the stop in engage.

ment with the teeth of the shank I have provided an outwardly-projecting pin or lug, d, upon each side of the movable jaw just above the bail, connecting the rear end of the movable jaw with the rear end of the stop or pawl, and against the under side of which said bail is adapted to bear, being held in place thereby against any movement which might be caused by the weight of the stop or pawl when the wrench was used in any other than a horizontal position.

In using the above described wrench the movable jaw is slid upon the shank until it reaches the nut or other object to be operated upon, the pivoted stop or pawl sliding upon the teeth upon the upper side of the shank; but as soon as such forward movement is stopped the movable j aw is locked against any rearward movement and is held securely in place. To withdraw the wrench the pivoted stop or pawl is raised, which action is allowed by reason of the connectingbails being made of springwire.

The raising of the stop or pawl is accomplished by means of a ring or loop, f, arranged IOC upon the upper side of the said stop or pawl, near the forward end thereof, though it will be obvious that other means than those shown and described may be employed.

It will be seen from the above description that a- Wrench constructed in accordance with my invention is simple in its construction, may be manufactured and supplied at a slight cost, that its operation is certain and effective, and that by its use any desired adjustment of the jaws may be instantly obtained.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

As an improvement in wrenches, the shank or bar provided with a fixed jaw at one end, in combination with a sliding jaw having transverse elongated slots at the front and rear ends, a pawl or stop, D, below the sliding jaw, and having teeth engaging teeth on the shank, spring-bails E, pivoted 0n the front and rear ends of the pawl or stop, and having their other ends fitted in the slots of the sliding jaw, and pins or lugs d, projecting laterally from the sliding jaw in rear of one of the bails, to provide an additional spring force for the same to retain the pawl or stop always in engagement, as set forth.

In testimony thatI claim the foregoing as my own I have hereto affixed my signature in presence of two Witnesses.

THOMAS J. WILSON.

WVitnesses:

AUGUSTUS WILSON, HoRAcE T. COOK. 

